2016 CX-5 Touring: sound under the car after turning off engine.

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vv1618

Member

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• Jun 17, 2015

• #1

Hi,

I have recently observed, in my new 2016 CX-5 Touring Trim FWD, a strong clicking sound under the car when I switch the engine off after about 20min drive.
Does any one know, or is there a thread that answers/discusses about this sound? One friend told me this was due to the Air Conditioner, but I drove without running the AC too, and I still hear the sounds. The sound stops after a minute or so though. Is this normal?

 

D

davefr

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ss

• Jun 17, 2015

• #2

I hear a fairly quiet fan running on mine after shutdown. Maybe you have a piece of debris caught in the fan.

 

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GP 2004

Member

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2015 CX-5 GT AWD liquid silver

• Jun 17, 2015

• #3

Are hearing the exhaust contracting as it cools?

 

V

vv1618

Member

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• Jun 17, 2015

• #4

GP 2004 said:

Are hearing the exhaust contracting as it cools?

Click to expand...

I haven't pointed out the exact location under the car, but yes, it feels like its coming from the rear.
Will check it today.

 

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vv1618

Member

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• Jun 17, 2015

• #5

Found this after a small search, looks like you are right GP 2004,

" That's just the sound of the hot metal contracting as it cools. The exhaust gasses start out at the engine around 1200 degrees, and cool as they exit. All of that heat is dissipated through the metal pipes, which causes them to expand. When you shut the engine off you take away the heat source which allows the pipes to start cooling very rapidly. The ticking noise is just the metal shrinking back to its normal (cool) state. Yes, all cars will make that noise. Some are more noticeable than others, but it's nothing to worry about. "

source: https://answers.yahoo.com/question/index?qid=20101030124946AAzM8Oj

 

U

Unobtanium

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RDX Aspec Adv.

• Jun 17, 2015

• #6

Metal cooling or condensation hitting exhaust from ac. Or...gremlin!